<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Form
 * @subpackage Decorator
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/** Zend_Form_Decorator_Abstract */
require_once 'Zend/Form/Decorator/Abstract.php';

/**
 * Captcha generic decorator
 *
 * Adds captcha adapter output
 *
 * @category   Zend
 * @package    Zend_Form
 * @subpackage Decorator
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Captcha.php 18951 2009-11-12 16:26:19Z alexander $
 */
class Zend_Form_Decorator_Captcha extends Zend_Form_Decorator_Abstract
{
	/**
	 * Render captcha
	 *
	 * @param  string $content
	 * @return string
	 */
	public function render($content)
	{
		$element = $this->getElement();
		if (!method_exists($element, 'getCaptcha')) {
			return $content;
		}

		$view    = $element->getView();
		if (null === $view) {
			return $content;
		}

		$placement = $this->getPlacement();
		$separator = $this->getSeparator();

		$captcha = $element->getCaptcha();
		$markup  = $captcha->render($view, $element);
		switch ($placement) {
			case 'PREPEND':
				$content = $markup . $separator .  $content;
				break;
			case 'APPEND':
			default:
				$content = $content . $separator . $markup;
		}
		return $content;
	}
}
